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        吴   捷 ，邓   恺 ，周   全 ， 陈雅秋 ，梅   伟

 

                                                             （华润水泥技术研发有限公司 ，广州 510460)

摘    要 ：通过单掺硅灰 、粉煤灰 、矿粉和三者复掺 ，研究了其对 3D 打印复合浆体流变性和可建造性的影 响。结果表明：单掺粉煤灰 、矿粉 、硅灰浆体的静态屈服应力随着掺量的增加而逐渐增大 ；随着粉煤灰和矿粉 掺量的增加 ，浆体圆筒坍落度和流动度呈现递增的趋势 ，掺加硅灰呈现相反趋势。而三者互掺时与单掺可能呈 现不同规律 ，单掺 4% 硅灰时 ，屈服应力和流动度良好 ，单掺 5% 矿粉时 ，效果最佳 ；单掺 30% 粉煤灰时 ，浆体 流变性能最佳 ；三者互掺时 ，硅灰掺量为 4% 、矿粉掺量为 5% 、粉煤灰掺量为 10% ,  3D 打印复合浆体流变性和 可建造性。

关键词：硅灰 ；粉煤灰 ；矿粉 ；复掺 ；流变性

中图分类号：TU52           文献标志码：A        

    

文章编号： 1005- 8249   (2025)  03- 0068- 05 

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .03 .013

WU Jie¹, WEI Fuhai², CHEN Yaqiu¹, MEI Wei¹, DENG Kai¹, ZHOU Quan¹

(1. China Resources Cement Technology R& D Co., Ltd., Guangzhou 510460, China;

2. China Resources Concrete (Baise) Co., Ltd., Baise 533000, China)

Abstract：The effects of single addition of silica fume, fly ash, mineral powder and their mutual blending on the rheological properties and constructability of 3D printing composite slurry were investigated. The results show that the static yield stress of the slurry with single addition of fly ash, mineral powder and silica fume gradually increases with the increase of the addition amount. With the increase of the addition amount of fly ash and mineral powder, the cylinder collapse degree and fluidity of the slurry show an increasing trend, while the addition of silica fume shows the opposite trend. When the three are added mutually, the possible rules may be different from those of single addition. When 4% silica fume is added singly, the yield stress and fluidity are good; when 5% mineral powder is added singly, the effect is the best; when 30% fly ash is added singly, the rheological properties of the slurry are the best. When the three are added mutually, the rheology and constructability of the 3D printing composite slurry are the best when the addition amount of silica fume is 4%, the addition amount of mineral powder is 5%, and the addition amount of fly ash is 10%.

Key words :  silica fume;  fly ash;  mineral powder;  compound addition;  rheological property

作者简介： 吴    捷  (1997—) ,   女 ，硕士 ，研究方向： 建筑材料。

收稿日期：2024 - 1 1 - 10